- The LAS point cloud and vendor project reports are available from [OpenTopography](http://opentopo.sdsc.edu/datasets).

LiDAR was captured for Waikato Regional Council by Aerial Surveys from 8 February 2015 to 24 January 2019. These datasets were generated by Aerial Surveys and their subcontractors. Data management and distribution is by Land Information New Zealand.

Released by LINZ under Creative Commons Attribution 4.0 New Zealand (CC BY 4.0) with:

Following Attribution:"Sourced from the LINZ Data Service and licensed by Waikato Regional Council, for re-use under CC BY 4.0."For details see: https://www.linz.govt.nz/data/licensing-and-using-data/attributing-elevation-or-aerial-imagery-data

The LiDAR sensor positioning and orientation (POS) was determined using the collected GPS/IMU datasets and Applanix POSPac software.

Please refer to survey reports for benchmark and base station information.

The POS data was combined with the LiDAR range files and used to generate LIDAR point clouds in NZTM and ellipsoidal heights. This process was undertaken using Optech LMS LiDAR processing software. The data was checked for completeness of coverage. The relative fit of data in the overlap between strips was also checked.

The positional accuracy of the LiDAR data has been checked by overlaying Sounds Surveying Ltd surveyed data over the LiDAR data displayed coded by intensity. The data was found to fit well in position.

The point cloud data was then classified withTerraSolid LiDAR processing software into ground and above ground returns using automated routines tailored to the project landcover and terrain.

Classification of the point cloud followed the classification scheme below:2 - Ground14 - Above Ground

Above_Ground (14) points was reclassified by LINZ as Unassigned classification (1) before providing the classified point cloud data to Open Topography.

LINZ also removed spikes from the Bare Earth Digital Elevation Model, found at tiles DEM_BC33_2015_1000_4227DEM_BC33_2015_1000_4228DEM_BC33_2015_1000_4326DEM_BC33_2015_1000_4327DEM_BC33_2015_1000_4328.

Lakes and large rivers were hydroflattened in the Bare Earth Digital Elevation Model.